Heated mat



FIG. 1 is a front top perspective view of a heated mat according to the new design;

FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines in the drawings illustrate portions of the heated mat that form no part of the claimed design.

The dash-dot-dash lines in the drawings represent a boundary of the claimed design. 

CLAIM The ornamental design for a heated mat, as shown and described. 